diff --git a/rpm/lemonldap-ng.spec b/rpm/lemonldap-ng.spec
index d15640d4c163b1e5bce4a4e26c48f26c69c89925..24a4682aab0503bb0c9b0e6f53bab71d15859018 100644
--- a/rpm/lemonldap-ng.spec
+++ b/rpm/lemonldap-ng.spec
@@ -21,7 +21,7 @@
 %global cpan_manager_version %{cpan_version}
 %global cpan_portal_version  %{cpan_version}
 
-%global lm_prefix /usr
+%global lm_prefix %{_prefix}
 %global lm_sharedir %{_datadir}/lemonldap-ng
 %global lm_examplesdir %{lm_sharedir}/examples
 %global lm_vardir %{_localstatedir}/lib/lemonldap-ng